Cascade Delete To Override Table Restrict Delete

hi all,

i have a test db set up and have dummy data in tables
that restrict deletes. i want to delete that dummy
data. i had this problem yesterday and, found a sql
statement to do it and everything was dandy.

not being too smart yesterday, i didn't save that sql
statement and i can't find it again today.

i thought is looked like...

DELETE FROM tablename WHERE constraint CASCADE;

i also tried...

DELETE FROM tablename WHERE constraint ON DELETE
CASCADE;

no luck.

any guidance here would be appreciated. tia...

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